How popular is Rodolfo?

Rodolfo is a very popular first name for males (#385 out of 1220, Top 32%) and a slightly less popular last name for both adults and children (#93006 out of 150436, Top 62%). (2000 U.S. DEMOGRAPHICS)

Rodolfo entered the list in 1900-1909 and reached its peak rank of #358 in the U.S. during 1980-1989, and is presently at #935. (TOP 2000 NAMES, 2015)

Which version is better?

Rolf, Rollo, Rudolf, Rudolfo and Rudolph are the popular varying forms of Rodolfo (#935 THE PREVIOUS YEAR). Other forms, like Rudolpho, are uncommon. Usage of these forms of Rodolfo was at its peak a century ago (MEDIAN #1044) and has become significantly less since (#1822, 91.5% LESS USAGE).